Is it Possible to ONLY Believe in the New Testament?

I was taught the Bible is God's Word, given to humans to be passed down unchanged except for translation, and any alteration is a sin. The leather and paper itself were sacred. What they didn't tell us was the books are out of order, true for Old and New Testament. The books are copies of copies of copies of copies, etc., there are multiple versions of some, conflicting versions, some were modified to suit a particular political climate, and some are incomplete. That additions had been made to "tweak" the story of Jesus. That some of Paul's letters were not written by Paul. That incomplete versions were "finished" by later authors. The Gospels were written anonymously. Some of the confusing verses in the Bible are because there were no equivalent words or phrases in Greek so stories were changed or translated literally and rendered senseless. So basically you have a book of stories, with a few that are probably true-ish, some are basically parables but are presented as history, and some are little more than propaganda. They might have taught that in some churches but I assure it would have been a great shock in the churches I attended. Questioning the Bible or teachings of elders was a sin. You could ask questions but you were expected to accept the answers which very often were not very satisfying. There was no "punishment," except they would probably put you in a prayer circle and try to pray the devil out of you. At a young age, I remember pondering questions and immediately asking Jesus for forgiveness. In hindsight, maybe it was good I went to such a strict fundamentalist church because if they had been relaxed and reasonable I might never have bothered to question it.